1 /* $NetBSD: if_bwi_pci.c,v 1.8 2009/04/26 10:45:19 cegger Exp $ */ 2 /* $OpenBSD: if_bwi_pci.c,v 1.6 2008/02/14 22:10:02 brad Exp $ */ 3 4 /* 5 * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* 21 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver 22 * PCI front end 23 */ 24 25 #include "bpfilter.h" 26 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: if_bwi_pci.c,v 1.8 2009/04/26 10:45:19 cegger Exp $"); 29 30 #include <sys/param.h> 31 #include <sys/callout.h> 32 #include <sys/device.h> 33 #include <sys/kernel.h> 34 #include <sys/malloc.h> 35 #include <sys/mbuf.h> 36 #include <sys/socket.h> 37 #include <sys/sockio.h> 38 #include <sys/systm.h> 39 40 #include <machine/bus.h> 41 42 #include <net/if.h> 43 #include <net/if_dl.h> 44 #include <net/if_ether.h> 45 #include <net/if_media.h> 46 47 #include <net80211/ieee80211_var.h> 48 #include <net80211/ieee80211_amrr.h> 49 #include <net80211/ieee80211_radiotap.h> 50 51 #include <dev/ic/bwivar.h> 52 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcivar.h> 55 #include <dev/pci/pcidevs.h> 56 57 /* Base Address Register */ 58 #define BWI_PCI_BAR0 0x10 59 60 static int bwi_pci_match(device_t, cfdata_t, void *); 61 static void bwi_pci_attach(device_t, device_t, void *); 62 static int bwi_pci_detach(device_t, int); 63 static void bwi_pci_conf_write(void *, uint32_t, uint32_t); 64 static uint32_t bwi_pci_conf_read(void *, uint32_t); 65 66 struct bwi_pci_softc { 67 struct bwi_softc psc_bwi; 68 69 pci_chipset_tag_t psc_pc; 70 pcitag_t psc_pcitag; 71 72 bus_size_t psc_mapsize; 73 }; 74 75 CFATTACH_DECL_NEW(bwi_pci, sizeof(struct bwi_pci_softc), 76 bwi_pci_match, bwi_pci_attach, bwi_pci_detach, NULL); 77 78 static int 79 bwi_pci_match(device_t parent, cfdata_t match, void *aux) 80 { 81 struct pci_attach_args *pa = aux; 82 83 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BROADCOM) 84 return (0); 85 86 switch (PCI_PRODUCT(pa->pa_id)) { 87 case PCI_PRODUCT_BROADCOM_BCM4303: 88 case PCI_PRODUCT_BROADCOM_BCM4306: 89 case PCI_PRODUCT_BROADCOM_BCM4306_2: 90 case PCI_PRODUCT_BROADCOM_BCM4307: 91 case PCI_PRODUCT_BROADCOM_BCM4309: 92 case PCI_PRODUCT_BROADCOM_BCM4311: 93 case PCI_PRODUCT_BROADCOM_BCM4312: 94 case PCI_PRODUCT_BROADCOM_BCM4318: 95 case PCI_PRODUCT_BROADCOM_BCM4319: 96 case PCI_PRODUCT_BROADCOM_BCM4322: 97 case PCI_PRODUCT_BROADCOM_BCM43XG: 98 case PCI_PRODUCT_BROADCOM_BCM4328: 99 return (1); 100 } 101 102 return (0); 103 } 104 105 static void 106 bwi_pci_attach(device_t parent, device_t self, void *aux) 107 { 108 struct bwi_pci_softc *psc = device_private(self); 109 struct pci_attach_args *pa = aux; 110 struct bwi_softc *sc = &psc->psc_bwi; 111 const char *intrstr = NULL; 112 pci_intr_handle_t ih; 113 pcireg_t memtype, reg; 114 int error = 0; 115 116 aprint_naive("\n"); 117 aprint_normal(": Broadcom Wireless"); 118 119 sc->sc_dev = self; 120 sc->sc_dmat = pa->pa_dmat; 121 psc->psc_pc = pa->pa_pc; 122 psc->psc_pcitag = pa->pa_tag; 123 124 /* map control / status registers */ 125 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0); 126 switch (memtype) { 127 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 128 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 129 break; 130 default: 131 aprint_error_dev(self, "invalid base address register\n"); 132 return; 133 } 134 135 if (pci_mapreg_map(pa, BWI_PCI_BAR0, 136 memtype, 0, &sc->sc_mem_bt, &sc->sc_mem_bh, 137 NULL, &psc->psc_mapsize) != 0) 138 { 139 aprint_error_dev(self, "could not map mem space\n"); 140 return; 141 } 142 143 /* map interrupt */ 144 if (pci_intr_map(pa, &ih) != 0) { 145 aprint_error_dev(self, "could not map interrupt\n"); 146 goto fail; 147 } 148 149 /* establish interrupt */ 150 intrstr = pci_intr_string(psc->psc_pc, ih); 151 sc->sc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_NET, bwi_intr, sc); 152 if (sc->sc_ih == NULL) { 153 aprint_error_dev(self, "could not establish interrupt"); 154 if (intrstr != NULL) 155 aprint_error(" at %s", intrstr); 156 aprint_error("\n"); 157 goto fail; 158 } 159 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 160 161 /* we need to access PCI config space from the driver */ 162 sc->sc_conf_write = bwi_pci_conf_write; 163 sc->sc_conf_read = bwi_pci_conf_read; 164 165 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 166 167 sc->sc_pci_revid = PCI_REVISION(pa->pa_class); 168 sc->sc_pci_did = PCI_PRODUCT(pa->pa_id); 169 sc->sc_pci_subvid = PCI_VENDOR(reg); 170 sc->sc_pci_subdid = PCI_PRODUCT(reg); 171 172 if (!pmf_device_register(self, bwi_suspend, bwi_resume)) 173 aprint_error_dev(self, "couldn't establish power handler\n"); 174 175 error = bwi_attach(sc); 176 if (error) 177 goto fail; 178 return; 179 180 fail: 181 if (sc->sc_ih) { 182 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 183 sc->sc_ih = NULL; 184 } 185 if (psc->psc_mapsize) { 186 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize); 187 psc->psc_mapsize = 0; 188 } 189 return; 190 } 191 192 int 193 bwi_pci_detach(device_t self, int flags) 194 { 195 struct bwi_pci_softc *psc = device_private(self); 196 struct bwi_softc *sc = &psc->psc_bwi; 197 198 pmf_device_deregister(self); 199 200 bwi_detach(sc); 201 202 if (sc->sc_ih != NULL) { 203 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 204 sc->sc_ih = NULL; 205 } 206 207 return (0); 208 } 209 210 static void 211 bwi_pci_conf_write(void *sc, uint32_t reg, uint32_t val) 212 { 213 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; 214 215 pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val); 216 } 217 218 static uint32_t 219 bwi_pci_conf_read(void *sc, uint32_t reg) 220 { 221 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; 222 223 return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg)); 224 } 225